Hi All,

I am trying to send a mail from linux server but could'nt able to send the mail.

I tried the below syntax's so far but no luck.

mail -s “Hello world”  abc@xyz.com <  /usr/g/txt.log
 
cat "txt.log" | mailx -s "Hello world" abc@xyz.com
 
mailx -s “Hello world” abc@xyz.com < /usr/g/txt.log < /g/txt.log

Try this command

mail -s " Test" abc@xyz.com <press enter> 
<type some message> <Press Enter>
. <press enter to sent>
cc: <press enter>

Run a sendmail test:
sendmail -bv abc@xyz.com
Look at DSsmarthost in /etc/{mail/}sendmail.cf
The "smarthost" or "smtp gateway" is part of the SMTP infrastructure where you plug in; it can be a host or (better) an MX record.
An MX record can be looked up with
nslookup -q=mx xyz.com or
dig -t mx xyz.com